How do I install NovaCoreTempFix-421856?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on CurseForge — not every file is mirrored on our own servers.

What Minecraft version does NovaCoreTempFix-421856 work with?

The listing gives Minecraft 1.21.1, 1.21.4. This is the version stated by the author or source site, not something we verified ourselves.

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NovaCoreTempFix-421856

Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.

by TTPeter · on CurseForge

Which Minecraft do you have?

Every version of the game needs its own build. Pick yours, then download — the wrong build installs fine and then does nothing in the game. This mod is built for NeoForge only.

Minecraft 1.21.4Newest
Minecraft 1.21.1

⬇ Download for 1.21.4 ⬇ Download for 1.21.1

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

This is a project to provide fixed and back-ported version of NovaCore (for 1.21.1/1.21.4 neoforge). Since the original author has been inactive and cannot be reached by any means and left unusable versions for a year, now I try to provide some.

The original project: https://www.curseforge.com/minecraft/mc-mods/novacore

My source code repo: https://github.com/LiuJiewenTT/ExNihiloSequentia-NovaCore

I DON'T GUARANTEE ANY FUTURE UPDATES, PLEASE USE ORIGINAL AUTHOR'S WORK FIRST!

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21.1, 1.21.4
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

File checked by MCModsHub

Ships as NovaCore-1.21.1-4.0.1-build.LOCAL.jar — drop this file into the mods folder
Download size: 77 KB
Download link checked 2 Oct 2026 — working

These come from our own check of the pack file, not from the source page.

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